TWM505350U - Hollow tube automatic forming machine - Google Patents

Description

Hollow tube automatic forming machine

The present invention relates to an automatic molding machine, and more particularly to a hollow tube automatic forming machine.

According to the conventional metal hollow tube, the metal hollow tube is formed by extrusion and stretching. Therefore, the metal hollow tube formed by the above method often has a large strain and an uneven stress distribution, and the existing metal hollow tube is relatively reduced. The quality of the product, which in turn affects the structural strength. Moreover, the number of equipment and tools required for extrusion and stretching is quite large and cannot be integrated into a single body for use, which not only increases the cost of manufacturing. It will increase the space required for the equipment and equipment. Furthermore, the user must operate and confirm between the equipment and the equipment, which will increase the time and difficulty required for manufacturing.

Therefore, in view of the defects and shortcomings of the existing methods for manufacturing metal hollow tubes, the present invention has finally developed a novel model which can improve the existing defects through continuous experiment and research.

The present invention mainly provides a hollow tube automatic forming machine, which can be easily bent into a hollow tube through a simplified structure configuration, and only needs to be on a single base, thereby providing a convenient The purpose of a hollow tube automatic forming machine that is manufactured, uniform in stress and cost-effective.

Based on the above object, the main technical means of the present invention is to provide a hollow tube automatic forming machine, which is provided with a base, the base is provided with a horizontally disposed processing platform and a longitudinally disposed combined wall surface; The mold set is disposed on the base and is provided with an outer mold base, two clamping seats and an inner mold base. The outer mold base is fixed on the processing platform and has an outer mold groove concave on the top surface. The clamping seat is movably disposed on the processing platform and is located at two sides of the outer mold base, and each of the clamping seats is respectively formed with a clamping groove on the facing inner side, and the inner mold base can be moved up and down The inner mold base is disposed at a position above the outer mold base, and the inner mold base is provided with a fixed arm, a swing arm and an inner mold rod, and the fixed arm is disposed at one side of the inner mold base, and the fixed arm is disposed on one side of the inner mold base The swinging arm is disposed on the other side of the inner mold base and faces the fixed arm. The two ends of the inner mold rod are fixed between the fixed arm and the swing arm, and the inner mold rod can follow the inner The die holder is moved relative to the base and disposed in the outer cavity of the outer die holder and covered by the clamping grooves of the two clamping seats a driving group, the driving group is combined with the base and the mold set, and is provided with a clamping driving rod, a mold base driving rod and a machining driving rod, wherein the clamping driving rod is rotatably disposed on the base Located under the processing platform, the clamping driving rod is combined with the bottoms of the two clamping seats, so that the two clamping seats can be moved closer to or away from each other relative to the processing platform, and the mold base driving rod is rotatably disposed on the bonding wall. And the inner mold base is combined with the inner mold base to cause the inner mold base to move up and down relative to the processing platform via the mold base driving rod, and the processing drive rod is rotatably disposed on the inner mold base and located Above the fixed arm and the swing arm; and a processing group, the processing group is combined with the driving group and located above the inner mold bar of the inner mold base, the processing group is provided with a sliding seat, a welding head and a rolling a sliding seat coupled with the machining drive rod to move the sliding seat relative to the inner mold rod by driving the machining drive rod, the welding head being disposed on a side of the sliding seat away from the machining drive rod Located above the inner mold pole, Rolling wheels rollingly disposed on one side of the welding head is located within the mold of the side bar.

Further, the inner mold base is provided with a steering device between the fixed arm and the swing arm, the steering device is provided with a pushing cylinder, a guiding rotating rod and a fixing seat, and the pushing cylinder is fixed in the inner mold And between the fixed arm and the swing arm, the guiding rotating rod is combined with the pushing cylinder and facing the swing arm, and the guiding rotating rod can be driven away from the pushing cylinder a direction of movement of the fixed arm, the guiding rotating rod is provided with an arc-shaped guiding groove on the outer surface, the fixing seat is fixed on the inner mold base and sleeved on the end of the guiding rotating rod away from the pushing cylinder The fixing base is internally provided with a guiding post, and the guiding post is disposed in the guiding slot of the guiding rotating rod, and the swinging arm is fixed to the end of the guiding rotating rod extending from the fixing seat Combine.

Further, the fixing seat is concavely disposed with a latching groove on a side surface of the swinging arm, and the swinging arm protrudes from a side surface facing the fixing seat with a latching block that is engaged with the latching slot.

Preferably, the guiding groove is in a line at an end close to the swing arm and an arc at the other end.

Preferably, the inner mold base is sleeved on the inner mold bar adjacent to the fixed arm, and a retractable pipe block slidable relative to the inner mold bar, and the unloading pipe block is concavely disposed with a insertion groove on the top surface. The set is provided with a retracting plunger which is disposed on a side of the rolling wheel away from the welding head, and the bottom end of the retracting rod can be inserted into the insertion groove of the retracting block.

Preferably, the bonding wall comprises two spaced apart plates and a mounting plate combined with the two plates and located on one side of the processing platform.

Preferably, the inner mold base and the joint wall of the base have a slide rail structure, so that the inner mold base can smoothly move relative to the joint wall surface, and the processing drive rod is disposed through the transverse direction. A rail seat on the inner mold base is disposed above the processing platform, and the rail seat is combined with the slide rail structure between the inner mold base and the base.

Preferably, the processing group is respectively provided with a driving pressure cylinder above the welding head, the rolling wheel and the retracting rod, so that the welding head, the rolling wheel and the retracting rod can be respectively respectively Move toward the inner mold bar.

Preferably, the fixing arm is provided with a mounting portion, and the swinging arm is provided with a rod hole linearly opposite to the mounting portion of the fixing arm, and both ends of the inner mold rod are fixed to the fixing arm And between the rod holes of the swing arm.

Preferably, the clamping driving rod is provided on the outer surface with two threads having different spiral directions and respectively combined with the bottoms of the two clamping seats, so that when the clamping driving rod rotates, the two clamping seats can be opposite to the The outer mold bases act to move closer to or away from each other.

With the above technical features, the present invention not only reduces the number of equipment and tools required, but also reduces the number of equipment and implements required by integrating the mold set, the drive group and the processing group on the base. Space, and can reduce the cost required for manufacturing. Moreover, the user only needs to place a metal plate on the outer mold base, and the metal plate can be bent, clamped and welded automatically and quickly. The operation of rolling, unwinding, etc., and automatically forming the metal plate into a hollow tube, so that the user does not need to operate and confirm between the equipment and the machine, and can avoid the method of extrusion and stretching. The hollow tube has many strains and uneven stress distribution, thereby providing a hollow tube automatic forming machine which is convenient to manufacture, uniform in stress and cost-saving.

10‧‧‧ Pedestal

11‧‧‧Processing platform

12‧‧‧Combined wall

13‧‧‧ board

14‧‧‧Installation board

20‧‧‧Mold group

21‧‧‧Outer mold base

211‧‧‧ outer mould slot

22‧‧‧Clamping seat

221‧‧‧Clamping slot

23‧‧‧Inner base

24‧‧‧Fixed Arm

25‧‧‧Swing arm

251‧‧‧ rod holes

252‧‧‧ card block

26‧‧‧Inner pole

27‧‧‧Retraction block

271‧‧‧ Insert slot

28‧‧‧Steering device

281‧‧‧Pushing pressure cylinder

282‧‧‧Guiding the rotating rod

283‧‧‧ Fixed seat

284‧‧‧ guiding slot

285‧‧‧ Guide column

286‧‧‧ card slot

29‧‧‧Slide rail structure

30‧‧‧Drive Group

31‧‧‧Clamping drive rod

32‧‧‧ mold base drive rod

33‧‧‧Processing drive rod

34‧‧‧Track seat

40‧‧‧Processing Group

41‧‧‧Sliding seat

42‧‧‧welding head

43‧‧‧Rolling wheel

44‧‧‧Retracting rod

45‧‧‧ drive cylinder

50‧‧‧Metal plates

Figure 1 is a perspective view of the present invention.

2 is an exploded perspective view of a partial member of the inner mold base of the present invention.

3 to 9 are schematic views showing the operation of processing a metal plate into a hollow tube.

In order to understand the technical features and practical functions of the present invention in detail, and in accordance with the contents of the specification, the present invention will be further described in detail with reference to the preferred embodiments as illustrated in the accompanying drawings. The new hollow tube automatic forming machine is provided with a base 10, a mold set 20, a driving group 30 and a processing group 40, wherein the base 10 is an L-shaped seat body, and the base 10 is provided with a The horizontally disposed processing platform 11 and the longitudinally disposed combined wall surface 12, preferably, the combined wall surface 12 includes two spaced apart plate bodies 13 and one combined with the two plate bodies 13 and located on the processing platform 11 As shown in FIGS. 1 and 3, the mold set 20 is disposed on the base 10 and is provided with an outer mold base 21, two clamping seats 22 and an inner mold base 23, wherein the outer mold base 23 The mold base 21 is an elongated block that is laterally fixed to the processing platform 11, and the outer mold base 21 is recessed downwardly with an elongated outer mold groove 211, and the two clamping seats 22 are movably And disposed on the processing platform 11 and on both sides of the outer mold base 21, so that the two clamping seats 22 can be close to or away from each other, and each clamping seat 22 The facing inner side surfaces are respectively formed with a quarter-circle clamping groove 221. When the two clamping seats 22 are located close to each other and are located above the outer mold base 21, the outer mold groove 211 and the two clamping grooves 221 are respectively formed. A long circular space can be formed; as shown in FIGS. 1 and 2, the inner mold base 23 can be moved up and down in combination with the joint wall surface 12 of the base 10 to be located in the outer mold base 21 The upper mold base 23 is provided with a fixed arm 24, a swing arm 25 and an inner mold rod 26. The fixed arm 21 is disposed on one side of the inner mold base 23 and is provided with a mounting portion, and the swinging portion is provided. The arm 25 is disposed on the other side of the inner mold base 23 and faces the fixed arm 24 . The swing arm 25 is provided with a rod hole 251 which is linearly opposite to the mounting portion of the fixed arm 24 . The two ends of the 26 are fixed between the mounting portion of the fixed arm 24 and the rod hole 251 of the swing arm 25, and the inner mold bar 26 can be disposed along with the inner mold base 23 moving relative to the base 10. The outer mold base 211 of the outer mold base 21 is covered by the clamping groove 221 of the two clamping seats 22, and further, the inner mold base 23 is sleeved on the inner mold rod 26 adjacent to the fixed arm 24. Relative to the inner mold a sliding retraction block 27, the retraction block 27 is recessed on the top surface with an insertion groove 271, wherein as shown in FIG. 9, the fixing arm 24 has a sleeve with an annular groove protruding from the inner side surface. and The retraction block 27 is sleeved on the sleeve of the fixed arm 24, and the retraction block 27 is laterally convexly disposed on the inner side surface with a plurality of plug bodies abutting against the annular groove, so that the retraction block 27 is movably In combination with the fixed arm 24; further, as shown in FIGS. 2 and 4, the inner die holder 23 is provided with a steering device 28 between the fixed arm 24 and the swing arm 25, wherein the steering device 28 is provided with a push cylinder 281, a guiding rotating rod 282 and a fixing base 283, wherein the pushing cylinder 281 is fixed on the inner mold base 23 and between the fixed arm 24 and the swing arm 25, the guiding rotating rod 282 In combination with the pushing cylinder 281 and facing the swing arm 25, the guiding rotating rod 282 can be moved away from the fixed arm 24 by the pushing of the pushing cylinder 281, and the guiding rotating rod 282 is on the outer surface. An arcuate guiding groove 284 is provided. Preferably, the guiding groove 284 is in a straight line near the end of the swinging arm 25 and has an arc at the other end. The fixing base 283 is fixed to the inner mold base. 23 is disposed on an end of the guiding rotating rod 282 away from the pushing cylinder 281, and the fixing base 283 is internally provided with a guiding 285, the guiding post 285 is disposed in the guiding groove 284 of the guiding rotating rod 282, and the guiding rotating rod 282 is pushed by the pushing cylinder 281 to be movable relative to the fixing seat 283, wherein The guiding rotating rod 282 is moved relative to the fixing base 283, and when the guiding post 285 is disposed at the arc end of the guiding groove 284, since the fixing base 283 is fixed on the inner mold base 23, the guiding The pivoting lever 282 is rotated relative to the fixing base 283, and the swinging arm 25 is fixedly coupled with one end of the guiding rotating lever 282 extending from the fixing base 283, so that the swinging arm 25 follows the guiding rotating lever The 282 is oscillated with respect to the fixing base 283. Preferably, the fixing base 283 is concavely disposed with a locking groove 286 toward a side of the swinging arm 25, and the swinging arm 25 faces the fixing seat. A latching block 252 is disposed on a side of the 283, and the latching block 252 is engaged with the latching lever 282. The latching block 252 of the swinging arm 25 is 252. The card is disposed in the locking groove 286 of the fixing base 283, and the swing arm 25 is fixedly coupled with the fixing base 283; As shown in FIGS. 1, 4 and 5, the driving group 30 is combined with the base 10 and the mold set 20 and is provided with a clamping drive rod 31, a mold base driving rod 32 and a machining drive rod 33, wherein The clamping drive rod 31 is rotatably disposed on the base 10 and below the processing platform 11, the clamping drive The moving rod 31 is provided with two threads on the outer surface which are different in the spiral direction and respectively combined with the bottoms of the two clamping seats 22. When the clamping driving rod 31 is rotated, the two clamping seats 22 can be opposite to the outer mold base 21 The mold base driving rod 32 is rotatably disposed at the joint wall surface 12 of the base 10 and combined with the inner mold base 23, so that the inner mold base 23 can pass through the mold base. The driving rod 32 is moved to move upward or downward relative to the processing platform 11, and the processing driving rod 33 is rotatably disposed laterally on the inner mold base 23 and above the fixed arm 24 and the swing arm 25. Further, the clamping driving rod 31, the mold base driving rod 32 and the processing driving rod 33 can be driven separately or simultaneously through a belt or a chain. The present invention is not limited, and preferably, the inner mold base 23 and the base are The joint wall 12 of the seat 10 has a slide rail structure 29, so that the inner mold base 23 can smoothly move relative to the joint wall surface 12. Further, the processing drive rod 33 is transmitted through a horizontal direction as shown in FIG. a rail seat 34 disposed on the inner mold base 23 is disposed above the processing platform 11 and the rail a seat 34 is coupled to the slide rail structure 29 between the inner mold base 23 and the base 10; and, as shown in Figures 1, 4 and 7, the processing set 40 is coupled to the drive unit 30. Above the inner mold bar 26 of the inner mold base 23, the processing group 40 is provided with a sliding seat 41, a welding head 42, a rolling wheel 43, and a retracting rod 44, wherein the sliding seat 41 and the machining drive rod 33 And the rail seat 34 is coupled to move the sliding base 41 relative to the inner mold rod 26 through the driving of the machining drive rod 33. The welding head 42 is disposed on a side of the sliding seat 41 away from the machining drive rod 33. Located above the inner mold bar 26, the rolling wheel 43 is rollably disposed on one side of the welding head 42 above the inner mold bar 26, and the retracting pipe rod 44 is disposed away from the rolling wheel 43. One end of the welding head 42 , the bottom end of the retracting rod 44 can be inserted into the insertion groove 271 of the unloading block 27 , and further, the processing group 40 respectively the welding head 42 , the rolling wheel 43 and the A driving cylinder 45 is respectively disposed above the retracting rod 44, so that the welding head 42, the rolling wheel 43, and the retracting rod 44 can be respectively moved toward the inner mold rod 26 .

When the new hollow tube automatic forming machine is used, please refer to FIG. 3, and a metal plate 50 to be processed is laid flat on the top surface of the outer mold base 21, and is rotated by the clamping driving rod 31. Positioning the two clamping seats 22 close to each other and against the opposite sides of the metal plate 50. At this time, As shown in FIG. 4, the inner mold bar 26 between the fixed arm 24 and the swing arm 25 is moved downward by the mold base driving rod 32, and the inner mold rod is moved downward. 26 is pressed against the metal plate 50 to move toward the outer cavity 211 of the outer die holder 21, so that the metal plate 50 has a curved structure in the outer cavity, and the clamping drive lever 31 rotates again as shown in FIG. The two clamping seats 22 are pushed against the opposite sides of the metal plate 50, and are respectively clamped by the clamping grooves 211 of the two clamping seats 22, so that the metal plate 50 is in the outer cavity 211 and the two clamps. An annular structure is formed between the slots 221 .

And as shown in FIG. 6, the sliding seat 41 of the processing group 40 is driven by the machining drive rod 33 to move the welding head 42 to one end of the curved metal plate 50, and the welding head 42 is opposite to the metal plate 50. The two opposite sides which are adjacent to each other after the bending are subjected to a welding process, whereby the curved metal plate 50 is formed into a hollow tube, and after the welding, the rolling wheel 43 is rolled to form the formed hollow tube. The stress energy is evenly distributed, and the quality of the hollow tube and the structural strength thereof are improved. When the welding head 42 and the rolling wheel 43 are processed for the metal plate 50, the clamping drive rod 31 is reversely rotated, so that The two clamping seats 22 are away from each other, and the retracting rod 44 will move to the upper side of the unloading block 27 as the sliding seat 41 is as shown in FIG. 7. At this time, the mold base driving rod 32 will Rotating in the opposite direction, the inner mold rod 26 is moved upwardly away from the fixed arm 24 and the swing arm 25 to leave the outer mold base 21, thereby the hollow tube located on the inner mold rod 26 and the outer mold groove 211 phase separation.

Referring to FIGS. 2 and 8, when the hollow tube moves over the outer mold base 21, the push cylinder 281 pushes the guide rotating rod 282 toward the swing arm 25, wherein When the guiding post 285 moves at the linear end of the guiding slot 284, the locking block 252 of the swinging arm 25 is gradually separated from the engaging slot 286 of the fixing base 283, and the swinging arm 25 is One end of the inner mold bar 26 is separated, and when the guide post 285 is disposed at the arc end of the guiding groove 284 due to the movement of the guiding rotating rod 282, the fixing seat 283 is fixed to the inner mold base 23 Therefore, the guiding rotating lever 282 is rotated relative to the fixing base 283, so that the swinging arm 25 fixedly coupled with the guiding rotating lever 282 is swung relative to the fixing base 283.

Referring to FIG. 9, when the swing arm 25 is separated from the inner mold rod 26, the driving cylinder 45 combined with the retracting rod 44 drives the retracting rod 44 to move downward. The bottom end of the retracting rod 44 is inserted into and inserted into the insertion groove 271 of the unloading block 27, and at this time, the sliding position of the sliding seat 41 toward the swing arm 25 is driven by the machining drive rod 33. Moving, the unloading block 27 that is engaged with the retracting rod 44 is slid relative to the inner mold bar 26, and the plugs of the unloading block 27 and the annular groove of the sleeve of the fixed arm 24 are moved. The trough phase separates and pushes against the hollow tube, so that the hollow tube is withdrawn from one end of the inner mold rod 26, that is, the operation of the novel hollow tube automatic forming machine is completed.

With the above technical features, the present invention integrates the mold set 20, the drive group 30 and the processing group 40 on the base 10, thereby reducing the number of equipment and tools required, and reducing the placement equipment and The space required for the implement and the cost required for manufacturing can be reduced. Further, the user can bend the metal plate 50 automatically and quickly by simply placing a metal plate 50 on the outer mold base 21. The folding, clamping, welding, rolling and unwinding operations automatically form the metal plate 50 into a hollow tube, so that the user does not need to operate and confirm between the equipment and the machine, and can avoid the squeeze And the method of stretching and the like causes the hollow tube to have many strains and uneven stress distribution, thereby providing a hollow tube automatic forming machine which is convenient to manufacture, uniform in stress and cost-saving.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art may use the present invention without departing from the scope of the present invention. Equivalent embodiments of the various changes or modifications made by the disclosed technical content, and without departing from the technical solutions of the present invention, are still within the scope of the present invention.

10‧‧‧ Pedestal

11‧‧‧Processing platform

12‧‧‧Combined wall

13‧‧‧ board

14‧‧‧Installation board

20‧‧‧Mold group

21‧‧‧Outer mold base

22‧‧‧Clamping seat

23‧‧‧Inner base

24‧‧‧Fixed Arm

27‧‧‧Retraction block

271‧‧‧ Insert slot

30‧‧‧Drive Group

31‧‧‧Clamping drive rod

32‧‧‧ mold base drive rod

33‧‧‧Processing drive rod

34‧‧‧Track seat

40‧‧‧Processing Group

41‧‧‧Sliding seat

Claims (12)

A hollow tube automatic forming machine is provided with: a base, the base is provided with a horizontally disposed processing platform and a longitudinally disposed combined wall surface; and a mold set is disposed on the base and is provided The utility model has an outer mold base, two clamping seats and an inner mold base. The outer mold base is fixed on the processing platform and has an outer mold groove recessed on the top surface, and the two clamping seats are movably disposed on the processing platform. And on the two sides of the outer mold base, each of the clamping seats is respectively formed with a clamping groove on the facing inner side, and the inner mold base is movable up and down with the combined wall surface to be located in the outer mold. Above the seat, the inner mold base is provided with a fixed arm, a swing arm and an inner mold rod. The fixed arm is disposed on one side of the inner mold base, and the swing arm is disposed on the other side of the inner mold base And facing the fixed arm, the two ends of the inner mold rod are fixed between the fixed arm and the swing arm, and the inner mold rod can be disposed outside the inner mold base relative to the base The outer mold groove of the mold base is covered by the clamping groove of the two clamping seats; a driving group, the driving group is coupled with the base and the mold set And a clamping drive rod, a mold base driving rod and a machining driving rod, wherein the clamping driving rod is rotatably disposed on the base and below the processing platform, the clamping driving rod and the bottom of the two clamping seats In combination, the two clamping seats can be moved toward or away from each other relative to the processing platform, and the die holder driving rod is rotatably disposed at the bonding wall surface and combined with the inner mold base, so that the inner mold base is coupled to the inner mold base Actuating the drive shaft of the mold base to move up and down relative to the processing platform, the machining drive rod is rotatably disposed on the inner mold base and above the fixed arm and the swing arm; and a processing group, the processing group In combination with the driving group, above the inner mold bar of the inner mold base, the processing group is provided with a sliding seat, a welding head and a rolling wheel, and the sliding seat is combined with the processing driving rod to make the sliding seat Moving along the inner mold bar by driving the machining drive rod, the welding head is disposed on a side of the sliding seat away from the machining drive rod and located above the inner mold rod, the rolling wheel is rollingly disposed on the welding rod One side of the head is located inside Pole side. The hollow tube automatic molding machine according to claim 1, wherein the inner mold base is provided with a steering device between the fixed arm and the swing arm, and the steering device is provided with a pushing cylinder, a guiding rotating rod and a fixing a pushing cylinder is fixed on the inner mold base and interposed between the fixed arm and the swing arm, the guiding rotating rod is combined with the pushing cylinder and facing the swing arm, the guiding rotating rod The guiding rod can be moved away from the fixing arm by the pushing of the pushing cylinder, and the guiding rotating rod is provided with an arc-shaped guiding groove on the outer surface, the fixing seat is fixed on the inner mold base and sleeved on The guiding rotating rod is away from the end of the pushing cylinder, and the fixing base is internally provided with a guiding post, and the guiding column is disposed in the guiding groove of the guiding rotating rod, the swinging arm and the guiding A rotating rod extends from one end of the fixing seat to be fixedly coupled. The hollow tube automatic molding machine according to claim 2, wherein the fixing seat is concavely disposed with a locking groove on a side of the swinging arm, and the swinging arm is convexly disposed on a side facing the fixing seat. The slot phase card is combined with the card block. The hollow tube automatic forming machine according to claim 3, wherein the guiding groove is in a straight line at an end close to the swinging arm and is in an arc at the other end. The hollow tube automatic forming machine according to any one of claims 1 to 4, wherein the inner mold base is sleeved on the inner mold rod adjacent to the fixed arm, and a retraction block slidable relative to the inner mold rod is disposed. The retreating block is provided with a insertion groove in the top surface, the processing group is provided with a retracting rod, and the retracting rod is disposed on a side of the rolling wheel away from the welding head, and the bottom end of the retracting rod It can be inserted into the insertion slot of the unloading block. The hollow tube automatic molding machine according to claim 5, wherein the joint wall surface comprises two spaced apart plates and a mounting plate combined with the two plates and located on one side of the processing platform. The hollow tube automatic molding machine according to claim 6, wherein the inner mold base and the joint wall of the base have a slide rail structure, so that the inner mold base can smoothly move relative to the joint wall surface, The machining drive rod is disposed above the processing platform through a rail seat disposed laterally on the inner mold base, and the rail seat is combined with the slide rail structure between the inner mold base and the base. The hollow tube automatic molding machine according to claim 7, wherein the processing group is respectively provided with a driving cylinder at a position above the welding head, the rolling wheel and the retracting rod, so that the welding head, the rolling The wheel and the retracting plunger are respectively movable toward the inner mold bar. The hollow tube automatic molding machine according to claim 8, wherein the fixing arm is provided with a mounting portion, and the swinging arm is provided with a rod hole linearly opposite to the mounting portion of the fixing arm, and both ends of the inner mold rod It is fixed between the mounting portion of the fixed arm and the rod hole of the swing arm. The hollow tube automatic molding machine according to claim 9, wherein the clamping driving rod is provided with two threads on the outer surface which are different in spiral direction and respectively combined with the bottoms of the two clamping seats, so that the clamping driving rod rotates. The two clamping seats can be moved toward or away from each other relative to the outer mold base. The hollow tube automatic molding machine according to any one of claims 1 to 4, wherein a slide rail structure is formed between the inner mold base and the joint wall of the base, so that the inner mold base can smoothly slide relative to the inner mold base In combination with the wall movement, the machining drive rod is disposed above the processing platform through a rail seat disposed laterally on the inner mold base, and the rail seat is combined with the slide rail structure between the inner mold base and the base. The hollow tube automatic forming machine according to claim 5, wherein a plurality of driving cylinders are respectively disposed on the welding head, the rolling wheel and the retracting rod, respectively, so that the welding head, the rolling The wheel and the retracting plunger are respectively movable toward the inner mold bar.